This code must give the output of the total cash , but rather gives wrong output? Can anybody please tell me what is wrong in it.
var cashRegister = {
total:0,
add: function(itemCost)
{
this.total += itemCost;
}
};
var i;
for (i=0; i<4; i++)
{
var a = prompt("Cost");
cashRegister.add(a);
}
//call the add method for our items
//Show the total bill
console.log('Your bill is '+cashRegister.total);
Your adding strings.
instead of:
this.total += itemCost;
try:
this.total += +itemCost;
You need to parseInt your input values because they are strings and you'll only concat them that way. So, try:
this.total += parseInt(itemCost, 10);
See here: http://jsfiddle.net/3x9AH/
You can try with:
add: function(itemCost)
{
this.total += parseInt(itemCost);
}
You are attempting to add strings.
You should convert to a number, but be careful with arbitrary user input.
For example, none of the other answers will take into account the following inputs:
Change this line:
this.total += itemCost;
to:
this.total += itemCost >> 0;
Use parseFloat() function, it used to parses a string argument and returns a floating point number.
this.total += parseFloat(itemCost);
The problem you have is that you are adding strings instead of numbers.
You can do something like this to fix it:
this.total += Number(itemCost);
